Wind measured capacity and availability factors calculator

Calculate capacity factor and availability with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use capacity factor and availability to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Measured energy (kWh)
2500000
Rated turbine power (kW)
1000
Observation duration (hours)
8760
Available operating hours (hours)
8500
Capacity factor (%)
28.538813
Availability (%)
97.031963
Capacity factor over available hours (%)
29.411765

Try another scenario

Measured energy (kWh)
2500001
Rated turbine power (kW)
1000
Observation duration (hours)
8760
Available operating hours (hours)
8500
Capacity factor (%)
28.538824
Availability (%)
97.031963
Capacity factor over available hours (%)
29.411776
Calculation method

Calculation method

Capacity factor (%)

Energy/(rated power×period hours); availability supplied separately; available-hour factor is not a resource forecast.

Availability (%)

Energy/(rated power×period hours); availability supplied separately; available-hour factor is not a resource forecast.

Capacity factor over available hours (%)

Energy/(rated power×period hours); availability supplied separately; available-hour factor is not a resource forecast.

Symbols and units
a
Measured energy (kWh)
b
Rated turbine power (kW)
c
Observation duration (hours)
d
Available operating hours (hours)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • User-supplied measurements and assumptions; Energy/(rated power×period hours); availability supplied separately; available-hour factor is not a resource forecast. Supported limits: Finite numeric values bounded to 1e9 magnitude; lists and tables contain 1–100 records unless a stricter bound is stated. Inputs use the units shown. Lists explicitly paired by a method must have matching lengths; independent polynomial coefficient vectors may differ. Respect stated physical, interpolation, policy and computational domain limits.
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